package lyh.hnu.config;

import lyh.hnu.common.JacksonObjectMapper;
import lyh.hnu.interceptor.LoginCheckInterceptor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

import java.util.List;

@Configuration
public class WebConfig implements WebMvcConfigurer {
    @Autowired
    private LoginCheckInterceptor loginCheckInterceptor;
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginCheckInterceptor)
                .addPathPatterns("/**")
                .excludePathPatterns("/employee/login")
                .excludePathPatterns("/employee/logout")
                .excludePathPatterns("/backend/**")
                .excludePathPatterns("/user/sendMsg")//移动端发送短信
                .excludePathPatterns("/user/login")//移动端登录
                .excludePathPatterns("/front/**");
    }

    //扩展MVC框架的消息转换器
    @Override
    public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建消息转换器对象
        MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
        //设置对象转换器，底层使用Jackson将Java对象转为Json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //将上面的消息转换器对象追加到MVC框架的转换器集合中
        //追加到转换器集合考前位置，优先使用
        converters.add(0, messageConverter);
    }
}
